8 papers · 1 filter
Kac-Moody algebras and the structure of cosmological singularities: a new light on the Belinskii-Khalatnikov-Lifshitz analysis
Marc Henneaux
The unexpected and fascinating emergence of hyperbolic Coxeter groups and Lorentzian Kac-Moody algebras in the investigation of gravitational theories in the vicinity of a cosmolog…
Turning the Cosmological Constant into Black Holes
Andres Gomberoff, Marc Henneaux, Claudio Teitelboim
It is known that there is a quantum mechanical tunneling process which, through nucleation of a membrane, induces a transition between two de Sitter spaces, lowering the cosmologic…
No consistent cross-interactions for a collection of massless spin-2 fields
Nicolas Boulanger, Thibault Damour, Leonardo Gualtieri +1
We report a no-go theorem excluding consistent cross-couplings for a collection of massless, spin-2 fields described, in the free limit, by the sum of Pauli-Fierz actions (one for…
Boundary terms in the AdS/CFT correspondence for spinor fields
Marc Henneaux
The requirement that the action be stationary for solutions of the Dirac equations in anti-de Sitter space with a definite asymptotic behaviour is shown to fix the boundary term (w…
Consistent Interactions Between Gauge Fields: The Cohomological Approach
Marc Henneaux
The cohomological approach to the problem of consistent interactions between fields with a gauge freedom is reviewed. The role played by the BRST symmetry is explained. Application…
Homological Algebra and Yang-Mills Theory
Marc Henneaux
The antifield-BRST formalism and the various cohomologies associated with it are surveyed and illustrated in the context of Yang-Mills gauge theory. In particular, the central role…